.card {
    min-height: 250px;
}

.main-button svg {
    margin-top: -5px;
}

.jumbotron-content {
    position: relative;
    min-height: 400px;
    max-width: 700px;
    margin: 0 auto;
}
.top-left {
    border-top: solid 10px #000;
    width: 70px;
    height: 70px;
    border-left: solid 10px #000;
    position: absolute;
}

.top-right {
    border-top: solid 10px #000;
    width: 70px;
    height: 70px;
    right: 0;
    position: absolute;
    border-right: solid 10px #000;
}
.bottom-left {
    border-bottom: solid 10px #000;
    width: 70px;
    height: 70px;
    border-left: solid 10px #000;
    position: absolute;
    bottom: 0;
}

.bottom-right {
    border-bottom: solid 10px #000;
    width: 70px;
    height: 70px;
    right: 0;
    bottom: 0;
    position: absolute;
    border-right: solid 10px #000;
}

.rec-text {
    position: absolute;
    right: 32px;
    color: red;
    top: 15px;
}

.rec-text svg {
    margin-top: -5px;
}

.battery {
    font-size: 32px;
    position: absolute;
    right: 30px;
    bottom: 15px;
}

.time {
    position: absolute;
    top: 15px;
    left: 25px;
    font-size: 20px;
}